Improvement in the fire-chambers of puddling, steam-boiler



-will be hereinafter explained.

@met @titille WILLIAM ronnrcn Bucci-Ina. or Prrrsnnc, PENNSYLVANIA.

Letters Patent No. 113,481, dated April 11, 1871.

VIMPROVEMENTIN THE FIRE-CHAMBERS OF PUDDLINGySTEAM-BOILER, ANDOTHER IFURNACE.S. l

The Schedule` referredl ton theserLettexs Patent and making parl; of thesame.

. puddling-furnace, exposingthe interiorofv-the fire- Figure 2, plate I,is ra 'perspective'viem exposing the bridge-wall and its air-inlets, andalso the air-inlets above the bridgewall. g

Figure `3, plate 2,'is .a section'throu'gh thebridge-- wall and crown ofthe furnacataken in, the vertical vplane indicatedgby dotted line y y,fig. 4;

Figure 4, plate 2, is a section through g. 3,' taken in the verticalplaneindicated by dotted-dine xx in Figure 5, plate 2,'is'a" sectionalAview, showing a modification-ofthe air-inlets of the bridgefwall and ofthe crown of the, furnace.

Similar lettersof reference indicate corresponding parts in the severalfigures-.

This invention relates to improvements which are especially applicableto' the-,furnaces of steam boilers, puddling-furnaces, and furnaces ofother kinds, and which are designed for increasing'combustiontherein .byproducing a more complete consumptionof the gases evolved from the fuel.

The nature of my invention consists- First, in mixing heated air, infine jets, with th V'gases rising from the fire-chamber of a furnace,and,

at the same time, spreading the flame into thin sheets by means of athickly-perfbrated pipe arranged between the bridge-wall and crown ofthe furnace, and in close relationto inely perforated air-conduits,which present waved surfaces, as will be hereinafter explained.

Second, in protecting portions of the air-inlet conduits in thebridge-wall and crown of the furnace by embedding them into the masonryof said walls, as

To enable others skilled in the art to understand my invention, I willexplain its construction and operation In the Vaccompanying drawing Ihave represented my improvements applied to a puddlingfurnaca but do notconfine myself thereto, as the improvements are equally applicable toand useful for all Varieties of furnaces which are inclosed by Walls ofmasonry.

F represents the fire-chamber; G, the grate tl1ereof; O, the bridge-wallofthe furnace, all of which parts may be constructed in the usualmanner.

D represents an air'conduit, which may be horizon'-- tal, or'constructedin the form'of an arch, and which is supportedat its extremities by thevertical walls inclosing the fire-chamber, so that air can enter itfreely l This pipe is located in the throat, bel at both end's. tweenthe crown-Wall and upper portion of the bridgewall, in such manner thatthe dame and products of' combustion rising from the fuel on the gratebelow will be divided into two sheets before passing over the center ofthe bridge-wall.

The pipe Dis thickly perforated for allowingthe i escape of air in aheated state, and in iue jets, into the flame which surrounds this pipe.

l In will be seen, by reference to lfigs. 4F and 5, that 4pipe D has theperforations'i entirely around it, andV from one end to the other, sothat the jets of Iair are directed upward and downward,`jandhorizontallyintc l the fire-chamber at the point where the ame'is arerested and divided by said pipe. By this'means there v is an abundantvdistribution of heated alr among the-I products of combustion, andtheyare thoroughly charged with this air.

A B represent two air-conduits,- arranged 1n a vertical plane passingcentrally and longitudinally through the bridge-wallO.- y

' The conduit B is partly embedded in the ridge of the bridge-wall O,and the conduit A is partly ernbediled in the crown E of the furnace.

Those portions of these conduits which areexposed inside of the .furnacepresent waved surfaces, shown Vin figs. 2 and 3, 'so arranged inrelation` to each other as to form a serpentine pr zigzag flue, throughwhichl the ame and products of combustion are compelled to pass on theirway out of the fire-chamber F.

rIhe. bottom surfaces of the'exposed portionst and the upper surfaces ofthe exposed portions g of said conduits are thickly perforated for theescape of air, which enters the conduits at a b into theA saidserpentine space or flue.

The ascending jets of heated air from conduit B and the .descending jetsof heated air from conduit A will pass across' the fine-space .andthoroughly mix with the products of combustion passing through thisspace. i.

' The conduits A B may be made in the` form of an arch, or they may bearranged in horizontal planes.

They may be made of iron or of any other suitable material.

'Ihe upper conduit A may receive air through openby means of the pipe D,before they reach the throat above the bridge-wall. l

Second, that the two sheets of ame and products" are subsequently spreadout laterally, and, at the same time, brought together vertically in athin sheet by means of the zigzag or serpentine ue, the oppositesurfaces of which are thickly perforated for the escape of heated air,in ue jets, from the two conduits'A B.

Third, that the unexposedportions of the conduits AB are embedded intotheir respective walls, and thus protected from injury by the action ofintense heat.

By this mode of constructing a furnace the infian1- `mable productsrising from the fire-chamber will be intimately mixed with ,heated airand consumed before -formed on the upper conduit A for the purpose ofsustaining the brick-work of thearch or crown of the furnace.

Having described my invention, Vhat I claim as new, and desire to secureby Letters Patent, s-

l. The combinationof the perforated pipe D with the conduits A B, thelatter-being constructed with perforated waved surfaces or extensions, gh, substantially-as described.

' 2v. The conduits A B, constructed as described, and partly embedded inthe furnace-walls, substantially as described. y

3. The arrangement in the throat of a furnace, between the bridge-wall Cand crown E of a perforated pipe, D, and perforated conduits A B,substanti ally as described.

WILLIAM FORDYOE BEEOHER.

Witnesses:

JOHN B. HE'RRON, WM. A. MCCLELLAND.

